*** My chess program went from about 1 to 1.8 million moves per second.
this is an impressive result. for the moment i haven't done any arithmetic test or disk access comparison...
the gain is sometimes very important. but it is not recommended to use -march=native because the program will only be able to run on the same type of processor. for debugging, I intend to keep the original version for that and as soon as the program is debugged compile it with the optimized version of qb64. I can't say anything for windows. I don't use it at all anymore. but i think you have to modify the setup_win.bat file to recompile qb64 with the Ofast parameter. i still advise to keep the original version.
this is an impressive result. for the moment i haven't done any arithmetic test or disk access comparison...
the gain is sometimes very important. but it is not recommended to use -march=native because the program will only be able to run on the same type of processor. for debugging, I intend to keep the original version for that and as soon as the program is debugged compile it with the optimized version of qb64. I can't say anything for windows. I don't use it at all anymore. but i think you have to modify the setup_win.bat file to recompile qb64 with the Ofast parameter. i still advise to keep the original version.